Jacksonville is warming quickly Tuesday after a mostly cloudy start, with afternoon temperatures expected to reach about 90 degrees before easing back into the upper 80s. The early part of the day should stay mostly dry, but coastal and riverfront residents have a more immediate concern than rain: minor flooding around high tide.
A Coastal Flood Advisory remains in effect through 8 p.m. Tuesday for coastal Duval County and the St. Johns River basin. Minor flooding is possible.
High-tide flooding does not require rain or a storm: NOAA says it occurs when sea levels and local conditions push water above normal high-tide levels. The agency reports that high-tide flooding is now twice as frequent in U.S. coastal communities as it was 20 years ago, making nuisance flooding an increasingly familiar coastal hazard. NOAA’s explanation of high-tide flooding describes the trend and its causes.
Warm Afternoon Before A Cloudy Night
Tuesday will have southerly flow. Isolated afternoon showers are possible across northeast Florida. Tonight becomes mostly cloudy, with temperatures settling near 72 degrees and southeast winds easing to calm in the evening. The National Weather Service’s Jacksonville discussion notes the shower potential, while its Jacksonville forecast gives the overnight temperature and wind outlook.
Storm Chances Return Midweek
Wednesday brings mostly sunny skies, a high near 88 and a 20% chance of precipitation. Thursday and Friday stay warm near the upper 80s, with rain chances of 30% Thursday and 40% Friday; chances rise to 50% Saturday and Sunday. The National Weather Service forecast for Jacksonville puts Wednesday’s high at 88 and lists the midweek and weekend rain chances.
The storm outlook carries a stronger weekend caveat than rain chances alone suggest: the National Weather Service’s Jacksonville office expects thunderstorm coverage to increase, with isolated strong to marginally severe storms possible. That does not mean severe weather is expected everywhere, but it adds a reason to keep checking local forecasts as the weekend approaches. The Jacksonville office’s Tuesday briefing highlights the potential.
By Monday, Jacksonville is forecast to be partly sunny, with showers likely, a high near 85 degrees and a 70% chance of precipitation. That is a wetter outlook than the drier beach-weather stretch covered in an earlier Hoodline forecast. The National Weather Service’s extended forecast lists Monday’s temperature and rain chance.
Beachgoers Face A Separate Hazard
The Atlantic beaches face a moderate rip-current risk, even as Tuesday’s rain chances remain low. Anyone entering the surf should stay near a lifeguard, avoid swimming alone and treat sunny skies as no guarantee of safe water conditions. The National Weather Service’s Tuesday briefing identifies a moderate risk at local beaches; its rip-current safety guidance recommends swimming near a lifeguard.
Rip currents are narrow, powerful channels of water flowing away from shore; they can form near breaks in sandbars and around jetties or piers, even when waves do not look especially large. If caught in one, do not fight the current: float or tread water, swim parallel to shore if able, and wave or yell for help. National Weather Service safety guidance outlines how to recognize and respond to rip currents.
